I could buy a Colt SAA for these prices.
Yes you could but a 3rd Gen Colt wouldn't be as well made as the later production USFA guns, when they quit using Uberti and sourced all their parts from USA suppliers. It all comes down to what's good enough. For the vast majority of Western enthusiasts and CAS competitors, the current Italian made single actions are good enough. Giving credit where it is due, in the last few years they are much better than their earlier offerings, like the one I bought from Cimmaron in the mid 1980s.
Others long for the quality and feel of first generation Colt SAAs and the USFA all American guns are as close as you will ever come to that. Try buying a 1st Gen Colt in the same condition as these expensive USFA guns. You won't be able to touch one. And, you'd probably be trounced for shooting a pristine 1st Gen Colt at that.
The biggest rip-off with USFA single actions are the obvious Uberti guns, re-fitted and refinished but still Italian in origin, that some sellers price the same as the late production USFAs. Unless you educate yourself on the differences, and they are mostly visible in good photos, there is great potential to get taken.
Dave